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US9185645B2 - Mobile communication system, method of controlling the same, and radio base station apparatus - Google Patents
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US9185645B2 - Mobile communication system, method of controlling the same, and radio base station apparatus - Google Patents

Mobile communication system, method of controlling the same, and radio base station apparatus Download PDF

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Publication number
US9185645B2
US9185645B2 US13/143,418 US201013143418A US9185645B2 US 9185645 B2 US9185645 B2 US 9185645B2 US 201013143418 A US201013143418 A US 201013143418A US 9185645 B2 US9185645 B2 US 9185645B2
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Prior art keywords
base station
radio base
location information
mobile terminal
station apparatus
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Expired - Fee Related
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US13/143,418
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English (en)
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US20110281592A1 (en
Inventor
Tomu Tamura
Yoshio Ueda
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NEC Corp
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NEC Corp
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Publication of US20110281592A1 publication Critical patent/US20110281592A1/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W4/001—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/50—Service provisioning or reconfiguring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • Y02B60/50—
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • a mobile communication system includes a radio communication network (RAN: Radio Access Network) and a core network (CN: Core Network).
  • RAN Radio Access Network
  • CN Core Network
  • the RAN includes a radio base station apparatus that directly communicates with a mobile terminal, and a control device that controls the radio base station apparatus.
  • the CN serves as a switching equipment of speech communication, and packet communication.
  • the radio base station apparatus in the mobile communication system is operated after execution of various tests and setting of various parameters. Due to this, the radio base station apparatus is able to provide a service area, which is an environment where communication is possible, for a mobile terminal.
  • Patent literature 1 discloses a technique related to reduction in power consumption by a radio base station apparatus.
  • FIG. 7 is a diagram for describing a radio base station apparatus according to Patent literature 1.
  • a radio base station apparatus 100 includes a control unit 120 that transmits/receives a signal 170 to/from a network 160 , and signal processing units 130 _ 1 ⁇ 130 _ 5 respectively transmitting and receiving transmission/reception signals 171 _ 1 ⁇ 171 _ 5 to and from the control unit 120 .
  • the radio base station apparatus 100 further includes a transmitter/receiver 140 that transmits and receives transmission/reception signals 172 _ 1 ⁇ 172 _ 5 transmitted or received to or from these signal processing units to and from the mobile terminal through an antenna 150 .
  • the terminal number estimating unit 110 estimates the number of mobile terminals present in a service area on the basis of the number of location registrations of the mobile terminals, the number of access request messages from the mobile terminals, or the number of incoming call notification messages to the mobile terminals. Further, the control unit 120 turns off power supplies of unnecessary signal processing units 130 _ 1 ⁇ 130 _ 5 on the basis of the estimated number of the mobile terminals.
  • Patent literature 2 discloses a technique related to a mobile radio antenna control system using a GPS (Global Positioning System).
  • FIG. 8 shows a mobile radio antenna control system disclosed in Patent literature 2.
  • a base station 209 includes a base station apparatus 205 , an antenna direction and transmission output controller 206 , a base station receiving antenna 208 , and a base station transmitting antenna 207 .
  • a mobile station 204 includes a mobile station apparatus 201 , a location detection apparatus 202 , and a mobile station antenna 203 .
  • the mobile radio antenna control system related to Patent literature 2 calculates at which location the mobile station 204 is present based on the location information received by the base station apparatus 205 . Then the base station apparatus 205 transmits radio waves having directivity in an optimum transmission direction with an optimum transmission output in consideration of the location of the mobile station 204 .
  • the radio base station apparatus keeps emitting radio waves even when there is no terminal that exists in the certain area, which results in electric power being consumed.
  • the location information management apparatus 3 acquires, as the location information of the mobile terminal 4 , the location information that the mobile terminal 4 is within the service area 5 of the radio base station apparatus 1 . Then, the processing apparatus 2 requests data from the location information management apparatus 3 , to thereby acquire the location information that the mobile terminal 4 is within the service area 5 of the radio base station apparatus 1 . In this case, the processing apparatus 2 keeps the state in which radio waves are emitted from the radio base station apparatus 1 , so that the mobile terminal 4 can communicate with the radio base station apparatus 1 .
  • the location information management apparatus 3 acquires, as the location information of the mobile terminal 4 , the location information that the mobile terminal 4 is within the service area 5 of the radio base station apparatus 1 .
  • the processing apparatus 2 requests data from the location information management apparatus 3 , to thereby acquire the location information that the mobile terminal 4 is within the service area 5 of the radio base station apparatus 1 .
  • the processing apparatus 2 allows radio waves to emit from the radio base station apparatus 1 so that the mobile terminal 4 can communicate with the radio base station apparatus 1 .
  • a power supply of a radio base station apparatus may be turned on using a method like Wake-on-LAN.
  • the VLR 6 acquires, as the location information of the mobile terminal 4 , the location information that the mobile terminal 4 is within the LA 7 . Then, the processing apparatus 2 requests data from the VLR 6 , to thereby acquire the location information that the mobile terminal 4 is within the LA 7 . In this case, the processing apparatus 2 allows radio waves to emit from the radio base station apparatus 1 .
  • the third exemplary embodiment uses a location management server 8 in place of the location information management apparatus 3 according to the first exemplary embodiment.
  • the mobile communication system includes a radio base station apparatus 1 , a processing apparatus 2 , and a location management server 8 .
  • the processing apparatus 2 is separately provided in FIG. 3 , it may be configured to be included in the radio base station apparatus 1 .
  • the radio base station apparatus 1 is an apparatus that communicates with a mobile terminal 4 .
  • the radio base station apparatus 1 has functions of performing radio communication with the mobile terminal 4 and of capable of changing settings of itself according to instructions by a higher-level device.
  • the location management server 8 is an apparatus that is capable of storing positional information of the mobile terminal 4 obtained from the GPS.
  • the location management server 8 updates the positional information of the mobile terminal 4 obtained from the GPS regularly from the mobile terminal 4 , or when receiving a location registration request/location update request from the mobile terminal 4 .
  • the processing apparatus 2 acquires information to switch the operation state of the radio base station apparatus 1 from the location management server 8 .
  • the processing apparatus 2 is connected to a plurality of radio base station apparatuses, and sets the operation state of each radio base station apparatus 1 according to the changes in the location information of the mobile terminal 4 .
  • the processing apparatus 2 has a function of exchanging information with the radio base station apparatus 1 and the location management server 8 , to hold the necessary information.
  • the mobile terminal 4 When the location information of the mobile terminal 4 is changed, the mobile terminal 4 notifies the location management server 8 of the change in the location information of the mobile terminal 4 . Upon receiving this, the location management server 8 updates the stored location information to the latest information.
  • the processing apparatus 2 requests data from the location management server 8 , to receive the location information of the mobile terminal 4 .
  • the processing apparatus 2 sets the operation state of the radio base station apparatus 1 based on the location information.
  • Setting of the operation state includes turning off a power supply of the radio base station 1 , turning on the power supply, preventing radio waves from being emitted (regardless of whether the power supply is ON or OFF), adjusting the volume, type, and cycle of the emitted radio waves or the like.
  • the location management server 8 acquires, as the location information of the mobile terminal 4 , the location information that the mobile terminal 4 is within the service area 5 of the radio base station apparatus 1 . Then, the processing apparatus 2 requests data from the location management server 8 , to thereby acquire the location information that the mobile terminal 4 is within the service area 5 of the radio base station apparatus 1 . In this case, the processing apparatus 2 keeps the state in which radio waves are emitted from the radio base station apparatus 1 , so that the mobile terminal 4 can communicate with the radio base station apparatus 1 .
  • the location management server 8 acquires, as the location information of the mobile terminal 4 , the location information that the mobile terminal 4 is not within the service area 5 of the radio base station apparatus 1 . Then, the processing apparatus 2 requests data from the location management server 8 , to thereby acquire the location information that the mobile terminal 4 is outside the service area 5 of the radio base station apparatus 1 . In this case, since the mobile terminal 4 need not communicate with the radio base station apparatus 1 , the processing apparatus 2 stops radio waves emitted from the radio base station apparatus 1 .
  • the location management server 8 acquires, as the location information of the mobile terminal 4 , the location information that the mobile terminal 4 is within the service area 5 of the radio base station apparatus 1 . Then, the processing apparatus 2 requests data from the location management server 8 , to thereby acquire the location information that the mobile terminal 4 is within the service area 5 of the radio base station apparatus 1 . In this case, the processing apparatus 2 allows radio waves to emit from the radio base station apparatus 1 so that the mobile terminal 4 can communicate with the radio base station apparatus 1 .
  • the operational state of the radio base station apparatus 1 is changed, which means radio waves are not emitted from the radio base station apparatus 1 , thereby achieving reduction in power consumption by the mobile communication system. Further, it is possible to prevent unnecessary radio waves from being emitted when there is no mobile terminal 4 under the control of the radio base station apparatus 1 , thereby being capable of reducing interference with a neighborhood.
  • a mobile communication system includes a radio base station apparatus 1 , a processing apparatus 2 , and a location information management apparatus 3 .
  • the processing apparatus 2 is separately provided in FIG. 4 , it may be configured to be included in the radio base station apparatus 1 or in the location information management apparatus 3 .
  • the radio base station apparatus 1 is an apparatus that communicates with a mobile terminal 4 .
  • the radio base station apparatus 1 has functions of performing radio communication with the mobile terminal 4 and of capable of changing settings of itself according to instructions by a higher-level device.
  • the processing apparatus 2 acquires the information to switch the operation state of the radio base station apparatus 1 from the location information management apparatus 3 .
  • the processing apparatus 2 is connected to a plurality of radio base station apparatuses, and sets the operation state of each radio base station apparatus 1 according to the changes in the location information of the mobile terminal 4 .
  • the processing apparatus 2 has a function of exchanging information with the radio base station apparatus 1 and the location information management apparatus 3 , to hold the necessary information.
  • the location information management apparatus 3 is an apparatus that holds information with which the location of the mobile terminal 4 can be specified.
  • the radio base station apparatus 1 autonomously executes periodic paging to check the presence or absence of the mobile terminal 4 .
  • the radio base station apparatus 1 holds the location information in the location information management apparatus 3 .
  • the mobile terminal 4 When the location information of the mobile terminal 4 is changed, the mobile terminal 4 notifies the location information management apparatus 3 of the change in the location information of the mobile terminal 4 . Upon receiving this, the location information management apparatus 3 updates the stored location information to the latest information.
  • the processing apparatus 2 requests data from the location information management apparatus 3 , to receive the location information of the mobile terminal 4 . Then, the processing apparatus 2 sets the operation state of the radio base station apparatus 1 based on this location information.
  • Setting of the operation state includes turning off a power supply of the radio base station 1 , turning on the power supply, preventing radio waves from being emitted (regardless of whether the power supply is ON or OFF), adjusting the volume, type, and cycle of the emitted radio waves or the like.
  • the location information management apparatus 3 acquires, as the location information of the mobile terminal 4 , the location information that the mobile terminal 4 is not within the service area 5 of the radio base station apparatus 1 . Then, the processing apparatus 2 requests data from the location information management apparatus 3 , to thereby acquire the location information that the mobile terminal 4 is outside the service area 5 of the radio base station apparatus 1 . In this case, since the mobile terminal 4 need not communicate with the radio base station apparatus 1 , the processing apparatus 2 stops radio waves emitted from the radio base station apparatus 1 .
  • the radio base station apparatus 1 Since the location of the mobile terminal 4 is specified according to whether the mobile terminal 4 responds to the paging of the radio base station apparatus 1 according to the fourth exemplary embodiment, the radio base station apparatus 1 repeats periodic paging regularly even when the mobile terminal 4 is outside the service area 5 . In other words, the radio base station apparatus does not emit radio waves during a period other than a period of executing the periodic paging.
  • the location information management apparatus 3 acquires, as the location information of the mobile terminal 4 , the location information that the mobile terminal 4 is within the service area 5 of the radio base station apparatus 1 . Then, the processing apparatus 2 requests data from the location information management apparatus 3 , to thereby acquire the location information that the mobile terminal 4 is within the service area 5 of the radio base station apparatus 1 . In this case, the processing apparatus 2 allows radio waves to emit from the radio base station apparatus 1 so that the mobile terminal 4 can communicate with the radio base station apparatus 1 .
  • the operational state of the radio base station apparatus 1 is changed, which means radio waves are not emitted from the radio base station apparatus 1 , thereby achieving reduction in power consumption by the mobile communication system. Further, it is possible to prevent unnecessary radio waves from being emitted when there is no mobile terminal 4 under the control of the radio base station apparatus 1 , thereby being capable of reducing interference with a neighborhood.
  • the base station apparatus 1 uses the method of periodic paging according to the fourth exemplary embodiment, it is possible to check the presence or absence in the service area in a shorter period than periodic location registration by the mobile terminal.
  • a radio base station apparatus 1 includes a processing apparatus 2 and a location information management apparatus 3 .
  • the operation state change means 10 is a means for outputting instructions to a circuit that controls output of radio waves of the radio base station apparatus, for example.
  • the radio base station apparatus 1 may include, as the location information acquisition means 9 , for example, an apparatus that acquires the location information such as the VLR, location management server and the like.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephone Function (AREA)
US13/143,418 2009-02-09 2010-01-27 Mobile communication system, method of controlling the same, and radio base station apparatus Expired - Fee Related US9185645B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2009-027724 2009-02-09
JP2009027724 2009-02-09
PCT/JP2010/000461 WO2010089972A1 (ja) 2009-02-09 2010-01-27 移動通信システム、及びその制御方法、無線基地局装置

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US20110281592A1 US20110281592A1 (en) 2011-11-17
US9185645B2 true US9185645B2 (en) 2015-11-10

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US (1) US9185645B2 (ja)
EP (1) EP2395796B1 (ja)
JP (1) JP5229330B2 (ja)
KR (1) KR101301431B1 (ja)
CN (1) CN102308638A (ja)
WO (1) WO2010089972A1 (ja)

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JP5498351B2 (ja) * 2010-11-01 2014-05-21 京セラ株式会社 基地局および基地局の制御方法
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